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July 2003

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Subject:
From:
Robert Tarzwell <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Tue, 29 Jul 2003 10:12:00 -0500
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Hi Frank   from the pictures the solder looks like its not taking to the pad
properly, the solder mask edge looks good so I dont think its mask on the
pads, the photos show dewetting and balled solder, which usualy means the
PCB manufatucture did not clean the board well enough before solder
application. or his solder machine is contaminated. The solder does look a
little  cold  but not to bad so iwould assume your wave solder machine is
ok. I would do a solder float test for proper solderability of the pcb.
R Tarzwell   megadan.com

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